Buggy code:
public void setRef ( PreparedStatement stmnt , int idx , Ref val , Column col ) throws SQLException { } public void setShort ( PreparedStatement stmnt , int idx , short val , Column col ) throws SQLException { } public void setString ( PreparedStatement stmnt , int idx , String val , Column col ) throws SQLException { } public void setTime ( PreparedStatement stmnt , int idx , Time val , Calendar cal , Column col ) throws SQLException { } public void setTimestamp ( PreparedStatement stmnt , int idx , Timestamp val , Calendar cal , Column col ) throws SQLException { } public void setTyped ( PreparedStatement stmnt , int idx , Object val , Column col , int type , JDBCStore store ) throws SQLException { } public void setUnknown ( PreparedStatement stmnt , int idx , Object val , Column col ) throws SQLException { } public byte [ ] serialize ( Object val , JDBCStore store ) throws SQLException { } public void putBytes ( Object blob , byte [ ] data ) throws SQLException { } public void putString ( Object clob , String data ) throws SQLException { } public void putChars ( Object clob , char [ ] data ) throws SQLException { } private static Object invokePutLobMethod ( Method method , Object target , Object [ ] args ) throws SQLException { } protected void storageWarning ( Object orig , Object converted ) { } public int getJDBCType ( int metaTypeCode , boolean lob ) { } public int getPreferredType ( int type ) { } public String getTypeName ( Column col ) { } public String getTypeName ( int type ) { } protected String appendSize ( Column col , String typeName ) { } public void setJoinSyntax ( String syntax ) { } public String getPlaceholderValueString ( Column col ) { } public SQLBuffer toSelectCount ( Select sel ) { } public SQLBuffer toDelete ( ClassMapping mapping , Select sel , Object [ ] params ) { } public SQLBuffer toUpdate ( ClassMapping mapping , Select sel , JDBCStore store , Object [ ] params , Map updates ) { } protected SQLBuffer toBulkOperation ( ClassMapping mapping , Select sel , JDBCStore store , Object [ ] params , Map updateParams ) { } protected void appendUpdates ( Select sel , JDBCStore store , SQLBuffer sql , Object [ ] params , Map updateParams , boolean allowAlias ) { } public String [ ] getDeleteTableContentsSQL ( Table [ ] tables ) { } public SQLBuffer toSelect ( Select sel , boolean forUpdate , JDBCFetchConfiguration fetch ) { } protected SQLBuffer getFrom ( Select sel , boolean forUpdate ) { } protected SQLBuffer getFromSelect ( Select sel , boolean forUpdate ) { } protected SQLBuffer getWhere ( Select sel , boolean forUpdate ) { } public SQLBuffer toTraditionalJoin ( Join join ) { } public SQLBuffer toSQL92Join ( Join join , boolean forUpdate , boolean first ) { } public SQLBuffer toNativeJoin ( Join join ) { } public boolean canOuterJoin ( int syntax , ForeignKey fk ) { } public SQLBuffer toSelect ( SQLBuffer selects , JDBCFetchConfiguration fetch , SQLBuffer from , SQLBuffer where , SQLBuffer group , SQLBuffer having , SQLBuffer order , boolean distinct , boolean forUpdate , long start , long end ) { } protected String getForUpdateClause ( JDBCFetchConfiguration fetch , boolean forUpdate ) { } public String getSelectOperation ( JDBCFetchConfiguration fetch ) { } protected SQLBuffer toOperation ( String op , SQLBuffer selects , SQLBuffer from , SQLBuffer where , SQLBuffer group , SQLBuffer having , SQLBuffer order , boolean distinct , long start , long end , String forUpdateClause ) { } protected void appendSelectRange ( SQLBuffer buf , long start , long end ) { } protected SQLBuffer getSelects ( Select sel , boolean distinctIdentifiers , boolean forUpdate ) { } protected void appendSelect ( SQLBuffer selectSQL , Object elem , Select sel , int idx ) { } public boolean supportsLocking ( Select sel ) { } public boolean supportsRandomAccessResultSet ( Select sel , boolean forUpdate ) { } public void assertSupport ( boolean feature , String property ) { } public void substring ( SQLBuffer buf , FilterValue str , FilterValue start , FilterValue end ) { } public void indexOf ( SQLBuffer buf , FilterValue str , FilterValue find , FilterValue start ) { } public void mathFunction ( SQLBuffer buf , String op , FilterValue lhs , FilterValue rhs ) { } public void comparison ( SQLBuffer buf , String op , FilterValue lhs , FilterValue rhs ) { } public void appendXmlComparison ( SQLBuffer buf , String op , FilterValue lhs , FilterValue rhs , boolean lhsxml , boolean rhsxml ) { } protected void appendNumericCast ( SQLBuffer buf , FilterValue val ) { } public void appendCast ( SQLBuffer buf , Object val , int type ) { } protected void appendLength ( SQLBuffer buf , int type ) { } public String addCastAsType ( String func , Val val ) { } public void refSchemaComponents ( Table table ) { } public String getFullName ( Table table , boolean logical ) { } public String getFullName ( Index index ) { } public String getFullName ( Sequence seq ) { } public String getValidTableName ( String name , Schema schema ) { } public String getValidSequenceName ( String name , Schema schema ) { } public String getValidColumnName ( String name , Table table ) { } public String getValidPrimaryKeyName ( String name , Table table ) { } public String getValidForeignKeyName ( String name , Table table , Table toTable ) { } public String getValidIndexName ( String name , Table table ) { } public String getValidUniqueName ( String name , Table table ) { } protected static String shorten ( String name , int targetLength ) { } private static boolean stripVowel ( StringBuffer name ) { } protected String makeNameValid ( String name , NameSet set , int maxLen , int nameType ) { } public String [ ] getCreateTableSQL ( Table table ) { } public String [ ] getDropTableSQL ( Table table ) { } public String [ ] getCreateSequenceSQL ( Sequence seq ) { } public String [ ] getDropSequenceSQL ( Sequence seq ) { } public String [ ] getCreateIndexSQL ( Index index ) { } public String [ ] getDropIndexSQL ( Index index ) { } public String [ ] getAddColumnSQL ( Column column ) { } public String [ ] getDropColumnSQL ( Column column ) { } public String [ ] getAddPrimaryKeySQL ( PrimaryKey pk ) { } public String [ ] getDropPrimaryKeySQL ( PrimaryKey pk ) { } public String [ ] getAddForeignKeySQL ( ForeignKey fk ) { } public String [ ] getDropForeignKeySQL ( ForeignKey fk ) { } protected String getDeclareColumnSQL ( Column col , boolean alter ) { } protected String getPrimaryKeyConstraintSQL ( PrimaryKey pk ) { } protected String getForeignKeyConstraintSQL ( ForeignKey fk ) { } protected boolean supportsDeferredForeignKeyConstraints ( ) { } private String getActionName ( int action ) { } public boolean supportsDeleteAction ( int action ) { } public boolean supportsUpdateAction ( int action ) { } protected String getUniqueConstraintSQL ( Unique unq ) { } protected boolean supportsDeferredUniqueConstraints ( ) { <START_BUG> return supportsUniqueConstraints ; <END_BUG>

Fix:
return supportsDeferredConstraints ;